Global Patent Index - EP 1934775 A4

EP 1934775 A4 20090128 - MULTIPLE COMPUTER SYSTEM WITH ENHANCED MEMORY CLEAN UP

Title (en)

MULTIPLE COMPUTER SYSTEM WITH ENHANCED MEMORY CLEAN UP

Title (de)

MEHRFACH-COMPUTERSYSTEM MIT VERBESSERTER SPEICHERSÄUBERUNG

Title (fr)

SYSEME A ORDINATEURS MULTIPLES A NETTOYAGE AMELIORE DE LA MEMOIRE

Publication

EP 1934775 A4 20090128 (EN)

Application

EP 06790318 A 20061005

Priority

  • AU 2006001448 W 20061005
  • AU 2005905581 A 20051010

Abstract (en)

[origin: WO2007041763A1] The updating of only some memory locations in a multiple computer environment in which at least one applications program (50) executes simultaneously on a plurality of computers M1, M2 .... Mn each of which has a local memory, is disclosed. Memory locations (A, B, D, E, X) in said local memory are categorized into two groups. The first group of memory locations (X1, X2, ... Xn, A1, A2, ... An) are each accessible by other computers. The second group of memory locations (B, E) are each accessible only by the computer having the local memory including the memory location. Changes to the contents of memory locations in the first group only are transmitted to all other computers. A demotion mechanism is disclosed to demote memory locations in the first group into the second group in the event that application program execution means that a memory location in said first group is no longer referenced by another memory location in another computer.

IPC 8 full level

G06F 15/16 (2006.01); G06F 12/02 (2006.01)

CPC (source: EP)

G06F 12/0269 (2013.01); H04L 67/1095 (2013.01)

Citation (search report)

  • [A] US 5960087 A 19990928 - TRIBBLE E DEAN [US], et al
  • [A] US 6081813 A 20000627 - WOLLRATH ANN M [US], et al
  • [A] US 2003208512 A1 20031106 - WOLLRATH ANN M [US], et al
  • [PA] WO 2005103927 A1 20051103 - WARATEK PTY LTD [AU], et al
  • [A] SÁNCHEZ A ET AL: "Distributed garbage collection for wide area replicated memory", PROCEEDINGS OF THE 6TH CONFERENCE ON USENIX CONFERENCE ON OBJECT-ORIENTED TECHNOLOGIES AND SYSTEMS, vol. 6, 29 January 2001 (2001-01-29), pages 1 - 14, XP002502672, Retrieved from the Internet <URL:http://portal.acm.org/citation.cfm?id=1268246> [retrieved on 20010129]
  • [A] S. E. ABDULLAHI, G. A. RINGWOOD: "Garbage collecting the Internet: a survey of distributed garbage collection", ACM COMPUTING SURVEYS, vol. 30, no. 3, September 1998 (1998-09-01), pages 330 - 373, XP002504741, ISSN: 0360-0300, Retrieved from the Internet <URL:http://portal.acm.org/citation.cfm?doid=292469.292471> [retrieved on 20081118]
  • [A] I. PUAUT: "Distributed garbage collection of active objects with no global synchronisation", LECTURE NOTES IN COMPUTER SCIENCE, MEMORY MANAGEMENT, vol. 637/1992, 1992, pages 148 - 164, XP008098868, ISSN: 0302-9743, ISBN: 978-3-540-55940-5, Retrieved from the Internet <URL:http://www.springerlink.com/content/5v28411810p6m700/> [retrieved on 20081118]
  • See references of WO 2007041763A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

WO 2007041763 A1 20070419; CN 101283344 A 20081008; CN 101283344 B 20101006; EP 1934775 A1 20080625; EP 1934775 A4 20090128; JP 2009512029 A 20090319

DOCDB simple family (application)

AU 2006001448 W 20061005; CN 200680037516 A 20061005; EP 06790318 A 20061005; JP 2008534814 A 20061005